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Abstract

Die British Library hat über eine Million eingescannter Bilder im Web veröffentlicht. Die gemeinfreien, also frei verwendbaren Bilder, die über die Flickr-Seite der britischen Nationalbibliothek erhältlich sind, stammen aus Büchern des 17., 18. und 19. Jahrhundert, wie aus einer Mitteilung hervorgeht. Sie wurden von Microsoft aus 65.000 Büchern digitalisiert. Der Softwarekonzern und die British Library hatten vor acht Jahren eine Zusammenarbeit vereinbart. Die Inhalte von 100.000 Büchern sollten zunächst über Microsofts Buchsuchprojekt recherchierbar sein. Alle Abbildungen sind mit Herkunftsangaben und dem Erscheinungsjahr versehen. Im nächsten Schritt plant die British Library ein Crowdsourcing-Projekt, um die Bilder automatisch inhaltlich zu klassifizieren. Die Daten zu den Bildern hat die British Library auf Github bereitgestellt. Der Code soll unter eine offene Lizenz gestellt werden.

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Abstract

Wie kann man ein Bild verstehen? Indem man die Erinnerung und das Gedächtnis befragt, die in einem Bild am Werk sind, das »Nachleben«, so die Antwort Georges Didi-Hubermans. Im Anschluß an diesen aus seiner Sicht zu Unrecht aufgegebenen Begriff Aby Warburgs nähert sich Didi-Huberman dem Phantomcharakter der Bilder, ihrer Fähigkeit zu spukhafter Wiederkehr. Aby Warburg hat das »Nachleben« der Bilder als erster zum zentralen Motiv seiner anthropologischen Erforschung der westlichen Kunst gemacht. In seiner meisterhaften Studie untersucht Didi-Huberman dieses Motiv im Hinblick auf seine Logik, seine Quellen und seine philosophischen Hintergrundannahmen. Indem er Warburg mit Jacob Burckhardt, Friedrich Nietzsche und Sigmund Freud ins Gespräch bringt, wirft er einen faszinierenden Blick auf das paradoxe Leben der Bilder zwischen Zeitgebundenheit und Ewigkeit. »Das fruchtbare und originelle Denken von Georges Didi-Huberman hört nicht auf, uns zu beflügeln.«

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Abstract

This paper discusses the goals and results of the research project Perseus-a as an attempt to improve information retrieval of digital images by automatically connecting them with text-based descriptions. The development uses the image collection of prometheus, the distributed digital image archive for research and studies, the articles of the digitized Reallexikon zur Deutschen Kunstgeschichte, art historical terminological resources and classification data, and an open source system for linguistic and statistic automatic indexing called lingo.

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Abstract

Web 2.0 and social/collaborative tagging have altered the traditional roles of indexer and user. Traditional indexing tools and systems assume the top-down approach to indexing in which a trained professional is responsible for assigning index terms to information sources with a potential user in mind. However, in today's Web, end users create, organize, index, and search for images and other information sources through social tagging and other collaborative activities. One of the impediments to user-centered indexing had been the cost of soliciting user-generated index terms or tags. Social tagging of images such as those on Flickr, an online photo management and sharing application, presents an opportunity that can be seized by designers of indexing tools and systems to bridge the semantic gap between indexer terms and user vocabularies. Empirical research on the differences and similarities between user-generated tags and index terms based on controlled vocabularies has the potential to inform future design of image indexing tools and systems. Toward this end, a random sample of Flickr images and the tags assigned to them were content analyzed and compared with another sample of index terms from a general image collection using established frameworks for image attributes and contents. The results show that there is a fundamental difference between the types of tags and types of index terms used. In light of this, implications for research into and design of user-centered image indexing tools and systems are discussed.